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UCC28881 700-V, 225-mA Low Quiescent Current Off-Line Converter
SLUSC36B
November 2015 – January 2016
UCC28881
PRODUCTION DATA.
CONTENTS
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UCC28881 700-V, 225-mA Low Quiescent Current Off-Line Converter
1
Features
2
Applications
3
Description
4
Revision History
5
Device Comparison
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Switching Characteristics
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.4
Device Functional Modes
8.4.1
Start-Up Operation
8.4.2
Feedback and Voltage Control Loop
8.4.3
PWM Controller
8.4.4
Current Limit
8.4.5
Inductor Current Runaway Protection
8.4.6
Over Temperature Protection
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
13-V, 225-mA High-Side Buck Converter
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Input Stage (RF, D2, D3, C1, C2, L2)
9.2.1.2.2
Regulator Capacitor (CVDD)
9.2.1.2.3
Freewheeling Diode (D1)
9.2.1.2.4
Output Capacitor (CL)
9.2.1.2.5
Pre-Load Resistor (RL)
9.2.1.2.6
Inductor (L1)
9.2.1.2.7
Feedback Path (CFB, RFB1 and RFB2) and Load Resistor (RL)
9.2.1.3
Application Curves
9.2.2
Additional UCC28881 Application Topologies
9.2.2.1
Low-Side Buck and LED Driver - Direct Feedback (Level Shifted)
9.2.2.2
High-Side Buck Converter
9.2.2.3
Non-Isolated, Low-Side Buck-Boost Converter
9.2.2.4
Non-Isolated, High-Side Buck-Boost Converter
9.2.2.5
Non-Isolated Flyback Converter
9.2.2.6
Isolated Flyback Converter
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Third-Party Products Disclaimer
12.2
Community Resources
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
Glossary
13
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
パッケージ・オプション
メカニカル・データ（パッケージ｜ピン）
D|7
MPDS347D
サーマルパッド・メカニカル・データ
発注情報
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